A remote attacker could entice a user to open a specially crafted Flash
file using a package linked against Win32 Codecs, possibly resulting in
execution of arbitrary code with the privileges of the process or a
Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

Gentoo has discontinued support for Win32 Codecs. We recommend that
users unmerge Win32 Codecs: